164 ^*'"^'' 



spot on the humeral and apical callosities black ; the knees, tibial spurs, and 

 the claws also black. 



Head sparsely punctured at the base, more coarsely and closely punctured 

 and longitudinally convex in front ; the clypeus almost quadrate, the side mar- 

 gins a little thickened, the apical margin narrowly I'eflexed and feebly arcuate. 

 Prothorax one-third broader at the base than long, the sides margined and 

 slightly sinuate behind the middle, the basal margin tri-sinuate with the outer 

 angles rovmded ; the entire surface, as well as that of the scutellum, rather 

 remotely and feebly punctured. Elytra one-third longer than together broad 

 at the base, a little narrowed behind and separately rounded at the apex, where 

 the margin is slightly serrate and a little produced, but obtuse, at the siitui-al 

 ano-le ; eight regular rows of very fine punctures on each and some scattered 

 punctvires in the interstices. Pygidium very convex, its apex sub-nodose, 

 sparsely strigose at the base and slightly asperate towards the apex. Underside 

 punctiired and with sparse grey hair at the sides, smooth in the centre ; sternal 

 process large, the apical part beyond the transverse line triangular, with its 

 apex somewhat obtuse and bent inwards; abdomen broadly and strongly 

 impressed. Legs long and slender, the anterior coxae and femora fringed with 

 brownish grey hair, anterior tibiae with two almost obsolete marginal teeth. 

 Length 24-26 mm. 



Dimbokro, Ivory Coast, West Africa. 



This interesting species is remarkable in being devoid of any 

 armature on the head of the male, and in this respect it differs from 

 all the described members of the genus. In coloration it resembles 

 C. 4!-maculata Fab., but has the head, pygidiimi, and legs green as in 

 aurata Westw. The aedeagus is very different from that of the allied 

 species. Besides the puncturation described, the entire upper surface, 

 when examined under a lens, is seen to have a secondary minute and 

 dense alutaceous puncturation. The two specimens I have seen are 

 males, the female being at present unknown. 



Highgate, London, N. : 



April 5th, 1915. 



TEN NEW BRITISH DIPTERA {NEMATOCEBA). 

 BY F. W. EDWARDS, F.E.S. 



(Ptiblished hy permission of the Trustees of the British Museum). 



The species to be mentioned have been known to the writer as 

 British for some time, and as some of them are of considerable interest 

 it may be worth while to place on record their occurrence in these 

 islands. In the following notes I have refrained from mentioning any 



